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Description: | Marine timekeeper, H2. Made between 1737 and 1739, this is a larger and more solidly built version of H1, see ZAA0034, with the additional refinement of a remontoire - a device to ensure that the drive to the two balances is as uniform as possible. It is probable that Harrison, who had moved to London by this time, had some help in making parts of H2. Because he discovered a design fault with its balances, Harrison never allowed H2 to be tested at sea. He kept it running at his house for many years until, in 1766, it was taken from him by the Astronomer Royal under the conditions of the longitude prize. See also; ZAA0034 (H1), ZAA0036 (H3) and ZAA0037 (H4).
AQN: Royal Greenwich Observatory (lender).
caption: H1 - Front View
caption: Marine timekeeper (H2), front
caption: Marine timekeeper (H2)
caption: Marine timekeeper (H2), front and side
caption: Marine timekeeper (H2), side
caption: H2 - Cutout image of D6784-1
caption: H1 - 3/4 Raised Front
caption: H1 - Dial Detail
caption: H1 - Top Detail Of Counterweights & Inscribed Plates
caption: H1 - Detail From Right Including Remontoire
caption: H1 - Upper Balance Springs
caption: H1 -Detail Of Right-hand Balance
caption: H1 - Fusee Stockwork
caption: H1 - Lefthand Side View
caption: H1 - Detail Lower Left-hand Side
caption: H1 - Detail Of Escapement
caption: H1 - Rear View
caption: H1 - Lower Balance Springs & Compensation
caption: H1 - Upper Balance Springs & Compensation
caption: H1 - Detail Of Compensation Levers
caption: H1 - 3/4 Raised View
caption: H1 - Left Escapement Detail Pallett
caption: H1 - Left Escapement Pallett
caption: H1 - Remontoire | Publisher: | "http://collections.rmg.co.uk/" | Rights holder: | "Royal Museums Greenwich" | Subjects: | Horology King George II Royal Greenwich Observatory Harrison The Old Royal Observatory Greenwich Treasures of the National Maritime Museum John Collections Blog | Source: | Royal Museums Greenwich | Identifier: | http://collections.rmg.co.uk/collections... | Go to resource |
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